An idea of a champion variant of Mom that I thought up,I'd say it's inspired by Fiend Folio's Fiend Mom Champion variant,but here's now Green Mom behaves:
Spawns Enemies from this very mod!
Footstomps leave green creep which damages the player
+Compatibility with Hardmode Major Boss Patterns!:
The Wigs spawn Flyders instead of Spiders
Eyes shoot 2-3 Ipecac shots at the direction they are looking!
Stuck Knifes will self destruct and leave green creep!
Knifes thrown through the doors will explode on impact!

Hope you don't mind if I put this idea in a Steam Discussion. I hope you like it,too! ;)
And hey,I like how Fiend Folio did their take on their own champion forms for Basement Bosses & Mom,& how the IPECAC Community(which is you guys) did on a champion variant of the Tapeworms Boss. That's pretty cool of what you did for the Monster of an Update for ICM. I hope you can use this idea to make a champion variant of Mom based off of this mod!